Foxboro I/A Series FBM218 P0922VW HART Communication Redundant Output Module

Functional Specifications of Field Device Channels:

• Supported HART Instrument Types:

  • HART instruments compliant to Version 5, 6, or 7 of the HART specifications may be used.

• Interface:

  • 8 isolated output channels.

• Communications To The Device:

  • Point-to-point, master/slave, asynchronous, half-duplex, at 1200 baud.

• System Checking:

  • Parity on each byte, and 32-bit CRC system checking on each message.

• Speed:

  • 2 messages per second.

• Fastest Allowed ECB Block Period:

  • 100 ms. However, reference to the Sizing Guidelines and Excel Workbook appropriate for your Control Processor is recommended to determine the optimal loading for a 100 msec Block Processing Cycle (BPC).

• Maximum Distance (FBM218 to Device):

  • Meets HART FSK physical layer specification HCF_SPEC-54, Revision 8.1 [up to 3,030 m (10,000 ft)].

• Current Outputs:

  • Analog Accuracy (Includes Linearity):
    • ±0.05% of span (between 4 mA and 20 mA).
  • Output Load:
    • 750 Ω maximum.
  • Maximum Rate of Change:
    • 20 mA in 60 milliseconds.
  • Resolution:
    • 13 bits.

Power Requirements

• Input Voltage Range:

  • 24 V dc +5%, -10%.

• Consumption:

  • 7 W (maximum).

• Heat Dissipation:

  • 5 W (maximum).

Environmental Specifications

• Operating Temperature:

  • Module: -20 to +70°C (-4 to +158°F)
  • Termination Assembly - PA: -20 to +70°C (-4 to +158°F)

• Storage Temperature:

  • Module: -40 to +70°C (-40 to +158°F)
  • Termination Assembly - PA: -40 to +70°C (-40 to +158°F)

• Relative Humidity:

  • 5 to 95% (noncondensing)

• Altitude:

  • Operating: -300 to +3,000 m (-1,000 to +10,000 ft)
  • Storage: -300 to +12,000 m (-1,000 to +40,000 ft)

• Contamination:

  • Suitable for use in Class G3 (Harsh) environments as defined in ISA Standard S71.04, based on exposure testing according to EIA Standard 364-65, Class III.

• Vibration:

  • 7.5 m/s2 (0.75 g) from (5 to 500 Hz)